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Rib h_wall(h=4, l=right_rib_x); // one more to mount a circuit outside the full dev board (in some cases) Arduino + DAC https://www.youtube.com/watch?v=t3kUPjdiq0o for explainer https://drive.google.com/drive/folders/156nn9rClRLJplS4M46s56-Pibi86Z-Kp for schematics and .ino file uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on SIP7, http://power.murata.com/data/power/ncl/kdc_nma.pdf Isolated 1W single output DC/DC, http://power.murata.com/data/power/ncl/kdc_cre1.pdf Isolated 1W single output DC/DC, http://power.murata.com/data/power/ncl/kdc_cre1.pdf Isolated 1W or 2W Single Output SM DC/DC Converters 78sr3.3 78sr5 78sr9 78sr12 78srXX DCDC-Converter, RECOM, RECOM_R-78E-0.5, SIP-3, pitch 2.54mm, size 23.3x6.2mm^2, drill diamater 1.15mm, pad diameter 2.7mm, size source Multi-Contact FLEXI-2V 0.25 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator XP_POWER IHxxxxDH DIP DCDC-Converter XP_POWER IHxxxxDH, DIP, (https://www.xppower.com/pdfs/SF_IH.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py TSSOP, 20 Pin (www.ti.com/lit/ds/symlink/tps7a7200.pdf#page=36), generated with kicad-footprint-generator Soldered wire connection with feed through strain relief, for 2 times 1.5 mm² wires, basic insulation, conductor diameter 1.25mm, outer diameter 3.9mm, size source Multi-Contact FLEXI-E 0.1 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Molex CLIK-Mate series connector, S05B-XASK-1N-BN (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf), generated with kicad-footprint-generator connector wire 1sqmm double-strain-relief Soldered wire connection, for 2 times 0.15 mm² wires, reinforced insulation, conductor diameter 0.5mm, outer diameter 1.7mm, outer diameter 2.3mm, size source Multi-Contact FLEXI-xV 1.5 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Molex SlimStack Fine-Pitch SMT Board-to-Board Connectors, 52991-0508, 50 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf.

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